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Aptitude · Q546

Number System

Competitive Exams · Aptitude · question 546

Q546

By how many of the following numbers is 212 - 1 divisible ? 2, 3, 5, 7, 10, 11, 13, 14

A.
4
Answer
B.
5
C.
6
D.
7

Answer: Option A

Solution

Answer: Option A
Solution:
(212 - 1) = (4096 - 1) = 4095, when is clearly divisible by 3, 5, 7 and 13 i.e., four numbers in all.